浈江特大桥钢－混凝土组合桁架梁设计

摘要

组合桁架梁是一种新型的结构形式，具有重量轻、建筑高度小、跨越能力强、方便检修维护等特点，具有广阔的应用前景，尤其是净空受限的跨线桥。新建赣韶铁路浈江特大桥主桥采用1－88 m 钢－混凝土简支组合桁架梁，以此工程为背景，介绍其结构设计、结构静力分析、结构的关键构造、施工方法、施工监测及控制等。%Composite truss beam,as a new form of steel reinforced concrete bridge structures,has the following characteristics:light weight,small building height,strong span ability,convenient maintenance and so on,so this structure has broadapplication prospect,especially on the bridge of limited clearance.The main bridge of Ganzhou to Shaoguan new railwayproject of Zhenjiang Bridge is a 1 -88m steelconcrete composite bridge.The paper,taking this as engineering background,introduces the structure design,the structural static analysis,the critical structure,the construction method,theconstruction monitoring and construction control.